nasolacrimal duct implantation

The nasolacrimal duct is still blocked by the nasolacrimal duct, which controls the chronic dacryocystitis of inflammation. Treatment of diseases: dacryocystitis acute dacryocystitis Indication The nasolacrimal duct is still blocked by the nasolacrimal duct, which controls the chronic dacryocystitis of inflammation. Preoperative preparation Rinse the lacrimal sac and inject antibiotic eye drops into the conjunctival sac. Prepare a 30~35mm long alloy tube (please install with a dentist) or a polypropylene tube with a wall thickness of no more than 0.3mm, a flared shape with an outer diameter of 5mm and a lower mouth of 3mm. Surgical procedure 1. According to the lacrimal sac removal, the skin is cut, the subcutaneous tissue and muscle are separated, and the lacrimal sac expander is placed to expose the internal hemorrhoids. The lacrimal sac was cut open in the anterior wall of the lacrimal sac. 2. Use the lacrimal duct dilator to expand the obstruction of the nasolacrimal duct. Preferably, the scar tissue in the nasolacrimal duct is cut by a circumcision method as described above. When there are conditions, the laser can also be used to break the blocking portion. 3. Insert the fine tube end of the tube into the nasolacrimal duct downward, so that the upper mouth is located at the upper mouth of the nasolacrimal duct. 4. Suture the internal hemorrhoid with 3-0 nylon thread, suture the tear fascia with 6-0 silk thread, and then suture the orbicularis muscle and skin with 3-0 silk thread. 5. Place a compression pillow in the teardrop removal section. Bandaged with a single eye bandage. complication The main complication is the escape or slip of the tube. Therefore, the tube must be made into a trumpet shape. It is more difficult to remove the sagittal tube that slides down to the lower nasal passage. First use the pliers to clamp the back and remove it.